Studies on Numerical Gas Dynamic Laser Facility

数值气体动力激光装置的研究

• 批准号: 62460072
• 负责人: KUBOTA Hirotoshi
• 金额: $ 3.97万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62460072/
• 关键词: Gas Dynamic Laser; Small-Signal Gain; Laser Power; Numerical Gas Dynamic Laser; ガスダイナミックレーザー; レーザー特性; レーザー出力; 振動緩和; 数値計算コード; 超音速流; 燃焼; 計算機プログラム

A combustion-driven CO_2 GDL (CO_2 Gas Dynamic Laser) consists of several elements of combustion system, gas-dynamics (supersonic flow and vibrational relaxation) system, and optics (resonator and its sub-system) system. Performances of CO_2 GDL is governed by combination of characteristics of these elements.This research composes a Numerical Gas Dynamic Laser Facility (NGDL) which has numerical codes for calculation of characteristics of each component. The NGDL is to draw an output of small-signal gain and/or laser power when fuel and oxidizer are given and to be used for tool for system optimization.The results are summarized as follows:1. The objectives of this research was satisfactorily accomplished.2. This NGDL has been applied to a system of C_6H_6 (Benzene)/O_2 (Oxygen). Effect of characteristics of each element on small-signal gain and laser power has been clarified. It may be possible that the optimal combination of fuel/oxidizer can be obtained.3. This NGDL can be applied for expectation and evaluation of the performance of the experimental facility.More researches are required for establishment of treatment procedure of numerical codes, improvement of computational accuracy and exact description of physical phenomena of GDL.

燃烧驱动的CO_2 GDL（CO_2气体动态激光器）由燃烧系统、气体动力学（超音速流动和振动弛豫）系统和光学（谐振器及其子系统）系统等多个元件组成。 CO_2 GDL的性能由这些元素的特性组合决定。本研究组成了一个数值气体动态激光装置（NGDL），它具有用于计算每个组件的特性的数值代码。 NGDL是在给定燃料和氧化剂时得出小信号增益和/或激光功率的输出，并用于系统优化的工具。结果总结如下： 1．本研究的目的得到了圆满的实现。 2．该NGDL已应用于C_6H_6（苯）/O_2（氧气）系统。阐明了每个元件的特性对小信号增益和激光功率的影响。有可能获得燃料/氧化剂的最佳组合。3．该NGDL可用于实验装置性能的预期和评估。数值代码处理流程的建立、计算精度的提高以及GDL物理现象的准确描述还需要更多的研究。

项目成果

Watanuki.T: Proc.7th Int.Symp,Gas Flow 〓 Chem,Laser. (1988)

Watanuki.T：Proc.7th Int.Symp，气体流量〓化学，激光（1988）

Watanuki, T., Sato, S., Itakura, Y., Ogura, E., Mizobuchi, Y. and Kubota, H.: "Characteristics of C_6H_6-O_2-N_2 Type CO_2 Gasdynamic Laser" Proc. 7th Inter. Symp. on Gas Flow and Chemical Lasers, SPIE Vol.1031, pp.160-165, 1988.

Watanuki, T.、Sato, S.、Itakura, Y.、Ogura, E.、Mizobuchi, Y. 和 Kubota, H.：“C_6H_6-O_2-N_2 型 CO_2 气体动力激光器的特性”Proc。

Tatsumi,M.,Wada,Y.,Sato,S.,Watanuki,T.and Kubota,H.: "Numerical Analysis on Gain of C_6H_6-O_2-N_2 Type CO_2 GDL" Proceedings of the 7th International Symposium on Gas Flow and Chemical Lasers,Vienna. 1031. 166-171

Tatsumi,M.、Wada,Y.、Sato,S.、Watanuki,T.和 Kubota,H.：“C_6H_6-O_2-N_2 型 CO_2 GDL 增益的数值分析”第七届国际气体流动与分析研讨会论文集

Tatsumi.M: Proc.7th Into Symp.Gas Flow 〓 Chem Laser. (1988)

Tatsumi.M：Proc.7th Into Symp.Gas Flow 〓 化学激光 (1988)

綿貫忠晴、小倉栄二、溝渕泰寛、佐藤茂、久保田弘敏: "燃焼駆動式CO_2ガスダイナミックレ-ザ-の特性(I)超音速ノズル開口比の影響" 日本航空宇宙学会誌. 36. 550-557 (1988)

Tadaharu Watanuki、Eiji Ogura、Yasuhiro Mizobuchi、Shigeru Sato、Hirotoshi Kubota：“燃烧驱动CO_2气体动态激光器的特性（I）超音速喷嘴孔径比的影响”日本航空学会学报36。550-557。 (1988)